I suspect that your equation of Mishna=Oral Torah is inaccurate. What do you say about d'Rabbanans (which the Mishna is full of)? Are they included in TSBP? Or are they a separate category?
Also, the tefilin found in Kumran had the decaloge and so do the tefilin of the Karaites. Analyse this! Rashi and Rabbeinu Tam isn't all there is to it: Lubavicher Rebbe used to put on 4 pairs of tefilin.
The real problem is that the oral transmition of information doesn't work. This is obvious to all of us from our daily lives and from the study of Talmud.
This study illustraits and explains why it is so. Do a web search for 'The Basic Psychology of Rumor' and you will find a 12 page PDF.
I suspect that your equation of Mishna=Oral Torah is inaccurate. What do you say about d'Rabbanans (which the Mishna is full of)? Are they included in TSBP? Or are they a separate category?
Important to note the Rama on Y"D 246:4: וי"א שבתלמוד בבלי שהוא בלול במקרא במשנה וגמרא אדם יוצא ידי חובתו בשביל הכל
Also, the tefilin found in Kumran had the decaloge and so do the tefilin of the Karaites. Analyse this! Rashi and Rabbeinu Tam isn't all there is to it: Lubavicher Rebbe used to put on 4 pairs of tefilin.
The real problem is that the oral transmition of information doesn't work. This is obvious to all of us from our daily lives and from the study of Talmud.
This study illustraits and explains why it is so. Do a web search for 'The Basic Psychology of Rumor' and you will find a 12 page PDF.